Text by Hillary Hauser Fifty years ago December a 1,020-foot (311m) dive off Catalina Island, California, changed everything. Hannes Keller’s revolutionary accomplishment accelerated a new age of deep sea diving, but the daring exploration came at a price   On his sixtieth birthday Hannes Keller flew a Russian MIG …

The Diving Almanac is the ultimate authority on diving exploits and history, but what’s the story behind the stories? By Jeffrey Gallant I was dreaming of overnight success… Reality struck at my first DEMA Show where I met veteran publisher Rick Stratton who looked me straight in the eye and said: …

By Michael Menduno 1680: Giovanni Borelli conceives the closed circuit rebreather. Believed recirculating air through copper tube cooled by seawater would allow impurities to condense. 1726: Stephan Hale developed a device for surviving mine disasters. The helmet contained a flannel liner soaked in sea salt and tartar as a …

Test your Titanic knowledge in this interactive quiz… [mtouchquiz 1]